Atlas/SPINE LOCKS/Can Opener
Spine locks·Cervical spine/Neck vertebrae · Gi & no-gi

Can Opener.

Neck crank from closed guard forcing cervical spine flexion

// CAN OPENER
7
DANGER / 10
Risk level
Low
cervical spine/neck vertebrae
Tap urgency
Gradual
tap response
Difficulty
2
/ 5 — setup
Danger level
7
/ 10
Positions
0
entry points
Perm. damage
Yes
irreversible risk
//01About this submission

What it is

Neck crank from closed guard forcing cervical spine flexion

What you do

The step-by-step execution breakdown lives in the app — mechanics, tips, and the full entry sequence.

Open1submission detailin the App Store
//02Stats breakdown
Setup complexity
2/10
Learning priority
2/10
Escapability
6/10
Versatility
3/10
Danger level
7/10
//03Safety notes
01

Tap immediately when you feel neck pressure—don't wait for pain.

02

Cervical flexion damage occurs before sharp pain develops.

03

Cumulative damage risk with repeated exposure in training.

04

Many gyms prohibit this entirely; poor technique despite IBJJF legality.

05

Herniated discs and nerve impingement carry lifelong consequences.

//04IBJJF belt legality
WHITELEGALBLUELEGALPURPLELEGALBROWNLEGALBLACKLEGAL
// Can Opener · Spine locks

Drill it.
Log it. Track the tap rate.

Open Can Opener in Grapla to add it to your drilling queue, log every attempt, and watch your finish rate move over the next 30 days.

Download on the
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